Described herein is a composition comprising a polymer blend. The polymer blend comprises 92 to 99 weight percent of a polyphenylene ether sulfone and 1 to 8 weight percent of a polyalkylene terephthalate, wherein weight percent is based on the combined weight of the polyphenylene ether sulfone and polyalkylene terephthalate. The polymer blend has a transmittance greater than or equal to 60% and a haze less than or equal to 10% at a thickness of 3.2 millimeters, as determined according to ASTM D1003.